| Adduktor | adductor |
| Abduktor | abductor |
| Induktor | inductor |
| Abduktion | abduction abductive reasoning |
| Aktor | actuator |
| Doktor | doctor physican |
| Autor | author literator |
| Äquator | equator |
| Add-On | add-on |
| Add-on | add-on |
| Addon | add-on |
| Paddeltour | paddle |
| Sadduzäer | Sadducee |
| Addition | addition addition reaction |
| Additiv | additive |
| additiv | additive additional |
| Deduktion | deduction |
| Duktus | flow |
| Düker | culvert |
| Edukt | reactant |